Rockwell Automation 1440-SDM02-01RA XM-124 Standard Dynamic Measurement Module - Manuel (Page 138)

138 Rockwell Automation Publication 1440-UM001C-EN-P - May 2014
Appendix B CIP Objects
Channel Object
(Class ID 31F
H
)
The Channel Object models front-end processing performed on an input signal
before specific measurements are performed. This processing typically includes
gain, filtering, and/or integration.
Channel Attributes
The Channel Object provides no class attributes.
Instances
There are four instances of this object. Instances 1 and 2 correspond to standard
channels 1 and 2, respectively. Instances 3 and 4 correspond to gSE channels 1
and 2, respectively.
Instance Attributes
Table 59 - Channel Object Instance Attributes
Attr ID
Access Rule
Name Data Type Description Semantics
3 Get/Set Output Data Units ENGUNIT The data units of the signal
resulting from the signal
processing performed in the
channel. See DeviceNet Specification Volume 1
Appendix K. Also see Parameter Object
Instances 3 and 4.
Valid values:
g = 1504
h
in/sec = 2B07
h
mil = 0800
h
psi = 1300
h
volt = 2D00
h
mm/s = 0900
h
μm = 2204
h
Pa = 1309
h
mbar = 1308
h
This setting is directly related to the
Sensitivity Units of the associated
transducer and the Level of Integration
performed on the channel.
4 Get Integration Level of
Integration USINT The level of integration to perform
on the signal. 0 = None
1 = Single
5 Get/Set Low Cutoff Frequency USINT The effective high pass filter (low
frequency corner) selection. 0 = Very low (0.2 Hz)
1 = Low (1 Hz)
2 = Medium (5 Hz)
3 = High (10 Hz)
4 = Very high (40 Hz)
See attributes 100…104.
6 Get/Set Synchronous BOOL Indicates whether this channel is
synchronized with the tachometer
signal. 0 = Asynchronous
1 = Synchronous